package vnreal.map;

import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.Painter;

import org.jdesktop.swingx.JXMapViewer;

public class SelectionPainter extends MouseAdapter implements Painter<JXMapViewer> {

    private Rectangle rect, start, end;
    private Color borderColor = new Color(0, 0, 200);
    private Color regionColor = new Color(0, 0, 200, 75);

    public SelectionPainter() {
    }

    @Override
    public void mousePressed(MouseEvent e) {
        if (e.getButton() != MouseEvent.BUTTON1) {
            rect = null;
            start = null;
        } else {
            start = new Rectangle(e.getPoint());
            ((JXMapViewer) e.getSource()).setEnabled(false);
        }
    }

    @Override
    public void mouseDragged(MouseEvent e) {
        if (start != null) {
            end = new Rectangle(e.getPoint());
            rect = start.union(end);
        }
        ((JXMapViewer) e.getSource()).repaint();
    }

    @Override
    public void mouseReleased(MouseEvent e) {
        if (start == null) {
            return;
        }
        end = new Rectangle(e.getPoint());
        rect = start.union(end);
        ((JXMapViewer) e.getSource()).setEnabled(true);
        ((JXMapViewer) e.getSource()).repaint();
    }

    @Override
    public void paint(Graphics2D gd, JXMapViewer t, int i, int i1) {
        if (rect != null) {
            gd.setColor(regionColor);
            gd.fillRect(rect.x, rect.y, rect.width, rect.height);
            gd.setColor(borderColor);
            gd.drawRect(rect.x, rect.y, rect.width, rect.height);
        }
    }
}